G62 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



DIASTYLIS LUCIFERA (Kr0yer). 



Cuma ludfera Kr0yer, Naturh. Tidsskr., vol. 3, 1841, p. 527, pi. 6, figs. 34-35. 

 Diastylis luciferus S. I. Smith, Trans. Conn. Acad., vol. 5, 1879, p. 112. 

 Diastylis ludfera G. O. Sars, Crust. Norway, vol. 3, 1900, p. 48, pi. 37. 



Localities. — Albatross station 2697; off Newfoundland; 206 fathoms; 

 U.S.N.M. 44053; 3, male and female. 



IT. S. F. C. station 160 (1878); Gulf of Maine; 54 fathoms; bottom 

 temperature, 39.5° F.; U.S.N.M. 34292; 2 females. 



DIASTYLIS GOODSIRI (Bell). 



Alauna goodsiri Bell, in Belcher, Last of the Arctic Voyages, vol. 2, 1855, p. 



403, pi. 24, figs. 2-2n. 

 Diastylis goodsiri G. O. Sars, Crust. Norway, vol. 3, 1900, p. 54, pi. 41. 



This fine species has been recorded from West Greenland (iat. 65° 

 35' N.) by Hansen. It had previously been recorded from the 

 Labrador coast by Packard, but the specimens appear to have been 

 wrongly identified.^ The localities given below extend its range far 

 to the southward. 



Localities.— Albatross station 2697; Iat. 47° 40' 00" N. ; long. 47° 35' 

 30" W.; 206 fathoms; U.S.N.M. 11785, 44050; 7, male and female. 



Albatross station 2488; Iat. 44° 35' 00" N.; long. 57° 13' 30" W.; 

 150 fathoms; U.S.N.M. 10501; 1 male. 



Albatross station 2471; Iat. 44° 34' 00" N.; long. 56° 41' 45" W.; 

 218 fathoms; bottom temperature, 40.4° F.; U.S.N.M. 10500; 1 male. 



Albatross station 2511; Iat. 44° 05' 30" N.; long. 63° 31' 30" W.; 

 84 fathoms; bottom temperature, 41.6° F.; U.S.N.M. 10502; 2 

 females. 



Twenty miles ESE. of Cape Sable, Nova Scotia; 70 fathoms; Owen 

 Bryant; October, 1908; U.S.N.M. 44051; 2 females. 



DIASTYLOPSIS DAWSONI S. I. Smith. 



Diastylopsis dawsoni S. I. Smith, Geol. Survey Canada, Report 1878-79 (1880), 

 p. 2155. 



Female (with developing oostegites). — Total length, 14.5 mm. (An 

 ovigerous female measured only about 12.5 mm. in length.) 



Carapace elongated and slender, its height a little less than, and 

 its transverse width about equal to, one-half of its length. In its 

 anterior part it is encircled by four very fine transverse lines which 

 converge as they approach the lower margin. In the second and 

 third of these lines the dorsal portion crossing the frontal lobe is 

 separated from the lateral portion which ends in front of it on the 

 frontal suture; it appears as though this dislocation were due to the 

 forward growth of the lateral plates of the carapace, carrymg with it 

 the lateral portions of the lines. The pseudorostrum is horizontal 

 and acute; there is a deep, rounded, anteimal notch defined by a 



'See Smith, Trans. Conn. Acad., vol. 5 p. 107. 



